Plot: Julia Louis-Dreyfus and Will Ferrell, stars of 'Downhill,' take a lie detector test. Did Will’s frat experience in college resemble that of his character Frank the Tank’s from 'Old School?' Was Julia the youngest female cast member to join SNL? Is Julia tired of talking about Elaine’s dance moves? Is Will a better drummer than his doppelgänger, Red Hot Chili Peppers drummer Chad Smith? Has Julia ever pretended to be surprised when winning one of her thirteen Emmys?